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Status:Closed    Asked:Dec 03, 2013 - 08:59 AM

How can you explain the difference between aerobic and anaerobic activities in chapter 2 study guide?

I was studying chapter 2 study guide and the question was to indicate which activities primarily rely on aerobic or anaerobic energy pathways. I am not sure if I am reading too much into this, but the obvious answer isn't so obvious to me.

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Aerobic activities require a steady supply of oxygen for energy production; these activities involve large muscle groups, sustained rhythmic activity, and increase the heart rate to a target level to increase cardiovascular fitness. Endurance activities like brisk walking, running, cycling, swimming, and cross-country skiing are aerobic activities; using cardio gym equipment — such as the stair climber, rower, and elliptical — also offers a great aerobic workout.

In contrast, anaerobic activities are fueled by an energy system (glycolysis) that doesn’t require oxygen. This system generally produces enough energy for a burst of high-intensity activity lasting approximately 1-3 minutes. Sprinting and lifting weights for a set of 8-10 reps are examples of activities that rely primarily on anaerobic sources of energy.

The phosphagen system provides energy for even shorter bouts of high-intensity activity, such as jumping, throwing a ball, a maximal lift, or a sprint lasting about 10 seconds or less.

The beauty of these energy systems is that all three are always in play; the dominating system at any given moment varies depending on the duration and intensity of the activity.



Dec 03, 2013 - 08:59 AM

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